Trolley-pole



(MOdeL) v J. .N. PRISK.

TROLLEY POLE.

NQ. 605,796. Patented June 1.4,.1898.

ad d WfTNESSES y ll 24/4644? ttarney PATENT om."

Jot-1N N. PRISK, .OF 'JOI-INSTOWN, PENNSYLVANIA.

TROLLEY-POLE.

srnciiucarronffrm ing part of Letters Pae'a No. 605,796, dated June 14,1898. Applicatioufiled February 8,1897. Serial No. 622,456. (Modeh) ToaZZ whom it may 0071136777 Be a known that I, JOHN PRISK, a citizen ofthe United States, residing at J ohnstownf,

in the county of Oambria and State of Pennsylvania, have inventedcertain new and-use ful Improvements in Trolley-Poles and Tide" herebydeclare the following to be a-full, clear,-' and exact description ofthe invention, such as will enable others skilled in the art to which itappertains to make and use the samejf This invention has reference to anovel (3on struction in a trolley-pole, and has for its object toprovide a'siiriple and inexpensivedevice of this character that isadapted to carry the trolley-wheel either below or above the wlre.

The invention consists in the features of construction hereinafterdescribed and'specifically claimed.

In the accompanying drawings, forming a part of this specification,Figure l isa perspective View of theItrolley-pole constructedinaccordance with this invention. Fig. 2 is a" vertical section'of thesame. Fig. 3 is a transverse section taken-longitudinally through theupper or swinging portion of the trolleypole. v Referring now to saiddrawings, 1 indicates the base or socket for the pole, which is providedwith feet by means of which it is secured to the roof .of a car. Thesaid socket receives the lower'or pivot end 2 of the post 3 in themanner shown. Pivoted to the upper end of the said post 3 are the arms4, preferably made of spring-steel and pivoted on opposite sides of thesame, as shown. The

upper ends of these arms are provided with the disks 5, that arecounterparts and which form in conjunction with each other atrolleywheel. In the particular construction illustrated these disks arefastened in arotatable manner to the arms 4 by means of the bolts 6, theheads of which are situated within the counter socket-openings of thesaid disks.

It will be seen from the foregoing descrip- -tion that these .disksmaybeseparated, and

it is intended that this trolley shall run ordinarily from the top ofthe wire, although is fastened between the arms 4; and serves to.drawthese arms together. Mounted upon ,the post 3 isa bracket 8, whichconsists of two spring 9 is fastenedflto the outer end of the bracket 8,while its-'upper end is fastened to the arms 4 by means of a bolt 10,extending between these arena-n being noted that said bolt 10 isprovided with a laterally-extending plate 11, against which the saidspring 9 bears. Any suitable manner of securing the spring to thebracket 8 and'bolt 10 may be employed;

but in the present instance the ends of the spring are coiled about saidparts and twisted upon each other.

In use it is seen thatthe post 3 can swing upon its pivot in theordinary manner and that the spring 9 lifts the arms 4 to carry the Thespringtrolley-wheel 5 above the wire. lifts the said arms 4 in order tocause the trolley-wheel to bear firmly against the wire if it is desiredto have it contact with the lower side thereof'and to raise said wheelabove the wire if it is desired to have the trolley run along the topsurface thereof, the two disks of the trolley separating to permit ofthis movement. It will be understood that after this has beenaccomplished the spring is distended nearly to its fullest extent, and

.the trolley-wheel is adapted to bear upon the conductor-wire by its owngravity and that of the arms 4. The primary object of this spring 9 isto support the parts 10 andll by replacing the trolley on top of themain wire after it passes the span-Wire. As the parts move it will benoted that when the spanwires strike the arms at they depress the sameand thereby open the trolley-wheel, or, in other words, separate thedisks thereof to allow the trolley to pass between these spanwires. Assoon as the span-wires are passed,

however, the spring 9 can raise the arm,while the spring 7 closes thedisks together again.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

g 1. The combination with a suitable support and trolley, of meansforretaining the trolley in contact with the wire either from above or frombelow, substantially as specified.

2. The combination with a suitable support and trolley, of mechanism forretaining the trolley in contact with the wire from above underpressure, and means for automatically dropping the trolley below thewire and for urging it against the underside of said wire, substantiallyas specified.

3. The combination with a support and trolley, of means forautomatically shifting said trolley above and below the wire to aceommodatc the variations of elevation of the latter, substantially asspecified.

4. The combination with a support and trolley, of means for shiftingsaid trolley both above and below the wire, and for retaining it incontact with said wire from above or below under pressure, substantiallyas specified.

5. I11 a trolley-pole, two pivoted arms, a trolley-wheel consisting oftwo independent disks adapted to normally abut against each other, andmeans to hold said disks in connection, whereby the said wheels may beseparated so as to be positioned above the con ductor-wire,substantially as shown.

6. In a trolley-pole, a swivel-post, arms pivoted thereto, consisting oftwo separable sections, a spring for holding said sections 30 normallyin contact, and a spring bearing against the arms to lift the samewhereby the said sections of the trolley-wheel may be separated toenable said wheel to take position above the conductor-wire,substantially as described.

'7. In a trolley-pole, a socket having a swiveled post, an adjustablebracket upon said post, swinging arms secured to said post, and a springbearing against a plate carried by said arms and against said bracket.

8. In a trolley-pole, the combination of a swivel-post, two arms pivotedthereto and extending parallel to each other, a trolley-wheel consistingof two separable disks one rotatably mounted on each arm, a springengaging said arms to normally hold the disks in contact, a bracket onthe swivel-post, and a spring connecting between the said bracket andthe arms to lift the latter, substantially as described.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

JOIIN N. PRISK.

Vitnesses:

CHARLES MATTHEWS, Howann A. CONLEY.

